Nut-lock



(No Model.) J. DITTM-ANN.

.l v NUT Loox. No. 529,718. 'Patented Nov; 27, 1894.

mmc.

UNITED STATES PATENT OFFICE.

vJACOB DITTMANN, OF ST. LOUIS, MISSOURI.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 529,718, dated November 27, 1894.

Application filed May 21, 1 894. Serial No. 5l1|897. (No model.)

To all whom it may concern:

Be it known that I, JACOB DITTMANN, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Nut-Locks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

The Object of my invention is to'provide improved means for securing and locking the nuts upon bolts that secure the meeting ends of railway, and other rails.

A further object of my invention is in the production of such a locking device that it can be easily and quickly attached, cheap in manufacture and efficient in use. I attain these objects by the use of a plurality of plates lying immediately upon the ordinary sh-plate and between the bolts and nuts passing through yand securing said fish-plates.

In order that my invention may be more fully understood, I will now proceed to describe it, reference being had to the accompanying drawings, in which Figure 1 is a perspective view of the baseplate I use in carrying out my invention, and Fig. 2 is a perspective View of the locking plate. Fig. 8 is a side elevation of the meeting ends of two railway rails, having the ordinary sh plate located thereon and my locking-plates in position as required for practical use. Fig. 4 is a cross-sectional View on the indicated line 4-4 of Fig. 3. Fig. 5 is a perspective View of a modified form of base-plate, and Fig. 6 is a perspective view of the locking plate of this modified form. Fig. 7 is a side elevation of the modified form of my locking device as applied to a railway rail, Fig. 8 being a cross-sectional view on the indicated line 8-8 of Fig 7.

Similar numerals refer' to similar parts throughout the several views.

In the construction of the device as shown, the numeral 1 designates the base-plate of my device, which is constructed of a rectangular piece of sheet metal, having the slots 2 in its ends and running parallel with the edges thereof. The inner ends of these slots 2 are rounded, as indicated by the numeral 3. Midway between the inner ends of these -slots 2 and in the center vertically of the plate lis an aperture, or bolt-hole 4. This base-plate l takes the place of the washers now used uponl the bolts between the nuts and the fish-plates.

The lockingfplate of my device is composed of arectangular portion of sheet metal 5 of a thickness corresponding to that-of the base-plate 1. This body portion 5 is of a length somewhat less than the distance between the rounded ends 3 of the slots 2 in the base-plate 1, and has formed integral with the lower edge the extending portions 6. These portions 6 serve to make the locking plate 5 of alength approximating that ot the base-plate 1. In the center of the body portion 5 of the locking-plate is an aperture, or bolt-hole, 7 to mate with the bolt-hole 4 in the base-plate. ing these plates is as follows: When the {ishplate 8 is in position upon the meeting ends of the rails 9, and before the nuts 10 are placed upon the bolts 11, the base-plate 1 is placed directly' upon the face of the fish-plate 8, the bolts 1l extending through the slots 2 in said base-plate adjacent the rounded ends 3 thereof. The nuts 10 are now firmly screwed pon the bolts 1l, until they contact with the ends of the base-plate l and become squared with said plate, or in the position as shown in Fig. 3. The locking-plate 5 is now placed directly against the base-plate 1, the outer edges of said locking-plate 5 and the upper edges of the portions 6v lying immediately against the lower and inner edges of the nuts 11. A bolt 12 of small diameter is now passed through the registering apertures, or bolt-holes, 4 and 7, and similar bolt-holes formed in the ish-plate and rail, and a nut 13 located upon the screw-threaded end thereof. By this means the two plates l and 5 are securely held in position upon the fishplate and between the nuts.

In the modified form shown in Figs. 5, 6, 7, and 8, the plates l and 5 are identical in form with those just described, with the eX- ception that in the plate l directly above the aperture 4, and in its center longitudinally, is formed a depression 14. This can be formed by either stamping, or by a punch and the repeated blows of a hammer.

Formed integral with the locking-plate 5,V

directly above the aperture7 and in its longitudinal center, is a hook 15, said hook ex- The manner of position- ICO tending a slight distance above the upper edge of the plate and from thence bent directly downward in a vertical plane with the body of said plate 5. The positioning of these modified forms of plates is identical with. that of the plates previously described. The hook engages Within the depression 14 in the plate 1. By this means thelockingplate 5 is securely held to the base-plate l, even though the nut 13 should become loosened from the bolt 12. In some instances Where the modified forms of my plates are used, the locking-bolt 12 and the nut 13 can be dispensed with. as the hook 15 alone would serve to securely lock said plates. By reason ofthe nuts 10 engaging against the upper edges of the portions 6 and the outer edges of the looking-plate 5, it will be seen how said nuts are securely and rigidly held in a locked position.

In Figs. 3 and 7, I have illustrated my device as operated with either an ordinary, or hexagonal nut.

As itis the intention to stamp the plates from sheet metal, it will be seen how they can beproduced ata minimum cost.

What I claim is- Y In a nut lock, the combination of arectangular hase-plate having longitudinal slots therein adapted to engage around the bolts on which the nuts are located, a lockingplate 5 rectangular in form and provided With the extending portions 6 on the lower corners of the body portion, the outer edges of said body portion and the upper edges of said extending portions adapted to engage the inner and under sides ot the nuts that are positioned upon the bolts,and aloekingbolt 12 passing through the plate 5, the baseplate, thesh-plates and the Web'of the rail, thus rigidly securing the plate 5 and the base-plate in the desired positions.

In testimony whereof I aix my signature in presence of two Witnesses.

JACOB DITTMANN. lVitnesses:

E. E. LONGAN, JNO. C. HIGDoN. 

